Oboe FIFO: general purpose FIFO
Bug: 33347409
Test: test_oboe_api
Change-Id: I764fe372f00b98364e4d36e7841cb00fc8af5695
Signed-off-by: Phil Burk <philburk@google.com>
diff --git a/media/liboboe/src/fifo/FifoBuffer.h b/media/liboboe/src/fifo/FifoBuffer.h
new file mode 100644
index 0000000..faa9ae2
--- /dev/null
+++ b/media/liboboe/src/fifo/FifoBuffer.h
@@ -0,0 +1,87 @@
+/*
+ * Copyright 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIFO_FIFO_BUFFER_H
+#define FIFO_FIFO_BUFFER_H
+
+#include <stdint.h>
+
+#include "FifoControllerBase.h"
+
+class FifoBuffer {
+public:
+ FifoBuffer(int32_t bytesPerFrame, fifo_frames_t capacityInFrames);
+
+ FifoBuffer(int32_t bytesPerFrame,
+ fifo_frames_t capacityInFrames,
+ fifo_counter_t * readCounterAddress,
+ fifo_counter_t * writeCounterAddress,
+ void * dataStorageAddress);
+
+ ~FifoBuffer();
+
+ int32_t convertFramesToBytes(fifo_frames_t frames);
+
+ fifo_frames_t read(void *destination, fifo_frames_t framesToRead);
+
+ fifo_frames_t write(const void *source, fifo_frames_t framesToWrite);
+
+ fifo_frames_t getThreshold();
+ void setThreshold(fifo_frames_t threshold);
+
+ fifo_frames_t getBufferCapacityInFrames();
+
+ fifo_frames_t readNow(void *buffer, fifo_frames_t numFrames);
+
+ int64_t getNextReadTime(int32_t frameRate);
+
+ int32_t getUnderrunCount() const { return mUnderrunCount; }
+
+ FifoControllerBase *getFifoControllerBase() { return mFifo; }
+
+ int32_t getBytesPerFrame() {
+ return mBytesPerFrame;
+ }
+
+ fifo_counter_t getReadCounter() {
+ return mFifo->getReadCounter();
+ }
+
+ void setReadCounter(fifo_counter_t n) {
+ mFifo->setReadCounter(n);
+ }
+
+ fifo_counter_t getWriteCounter() {
+ return mFifo->getWriteCounter();
+ }
+
+ void setWriteCounter(fifo_counter_t n) {
+ mFifo->setWriteCounter(n);
+ }
+
+private:
+ const fifo_frames_t mFrameCapacity;
+ const int32_t mBytesPerFrame;
+ uint8_t * mStorage;
+ bool mStorageOwned; // did this object allocate the storage?
+ FifoControllerBase *mFifo;
+ fifo_counter_t mFramesReadCount;
+ fifo_counter_t mFramesUnderrunCount;
+ int32_t mUnderrunCount; // need? just use frames
+ int32_t mLastReadSize;
+};
+
+#endif //FIFO_FIFO_BUFFER_H